Finding the Fourth Proportional to 2,599.77, 3,587.72 and 1,420.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.77 : 3,587.72 = 1,420.84 : x
2. Step 2: Convert to fraction form
   2,599.77/3,587.72 = 1,420.84/x
3. Step 3: Cross multiply
   2,599.77x = 3,587.72 × 1,420.84
4. Step 4: Simplify right side
   2,599.77x = 5,097,577.46
5. Step 5: Solve for x
   x = 5,097,577.46/2,599.77
6. Step 6: Final answer
   x = 1,960.78